The Fujinon XA20sx8.5BERM-K3 ENG Lens is 20x Zoom Ratio and 2x Extender lens designed for B4 mount cameras with wide angle and super telephoto angle-of-view. The Fujion lens has Fast f/1.8 Max Aperture at 8.5-113mm and f/2.7 at 175mm. Digital Quick zoom is 0.7 seconds end to end, provides a rapid zoom movement to the telephoto position. This lens is a good fit for Blackmagic URSA Mini Pro with B4 Lens Mount

Product details

2/3'' HD ENG telephoto lens
20x zoom
2x extender
Focal length (1x) 8.5 - 170mm
Focal length (2x) 17 - 340mm
Angular field of view (1x) 8.5mm: 58°51' x 35°11' 170mm: 3°14' x 1°49'
Angular field of view (2x) 17mm: 31°30' x 18°01' 340mm: 1°37' x 0°54'
Quickzoom
Cruise Zoom
Inner focus
Digital servo
M82 x 0.75 filter thread
Maximum relative aperture (F-No.) 1:1.8 (8.5-113mm) / 1:2,7 (170mm)
Minimum object distance (M.O.D.) 0.9m
Object dimensions at M.O.D. (1x) 8.5mm: 910 x 511mm 170mm: 47 x 26mm
Object dimensions at M.O.D. (2x) 17mm: 469 x 264mm 340mm: 24 x 13mm
Size (diameter x length) 85 x 200.8mm
Weight (without lens hood) 1.6k